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Case Study

Permavent APEX and Permavent Tray specified as part of the large-scale refurbishment works at City Park, St Andrews.

City Park, St Andrews is a residential refurbishment project involving a broad range of housing types, from traditional bungalows to a Victorian Building. With roofing works carried out across multiple phases, the project required a solution capable of delivering consistent performance while accommodating varying roof designs and construction details. Permavent APEX was selected to enhance the overall roof build-up by supporting airflow and moisture management within the structure, while also providing an additional layer of weather protection. Permavent Tray complimented the installation by helping maintain effective drainage and roof edge integrity. Together, the systems contributed to a durable and efficient refurbishment programme focused on improving the long-term resilience of the development.

View products used in project

Location

City Park, St Andrews, Scotland

The Project

City Park, St Andrews is a large-scale residential refurbishment project involving a varied mix of property types, including bungalows, three-storey buildings, and a Victorian building. Delivered in three planned phases, the project required extensive roofing works as part of a wider upgrade to improve the condition and long-term protection of the development.
A key requirement was to specify a high-performance roofing underlay that could be installed efficiently across multiple buildings while providing dependable long-term weather protection. The chosen solution also needed to support a smooth installation process and consistent performance across differing roof structures.

Permavent in Action

Permavent APEX, our air open and vapour permeable underlay, was specified for its ability to provide a reliable secondary barrier to water ingress while helping control condensation within the roof structure. This made it an ideal choice for a refurbishment project where both immediate protection and long-term roof performance were key priorities. Permavent APEX offered the versatility needed to meet these varying requirements while maintaining a consistent specification throughout the project.

Permavent Tray was also utilised to support robust detailing at the roof edge, helping ensure effective drainage and protection at one of the roof’s most critical areas. Together, the products delivered a dependable and practical roofing solution for a complex phased refurbishment. Permavent is proud to support projects helping upgrade and protect residential communities.

“As a leading installer of roofing systems, we at B&D ROOFING AND BUILDING have been consistently impressed with the quality and reliability of the roofing underlays provided by Permavent. Their products have not only met but often exceeded our expectations in terms of performance and durability. We’ve found that their products provide outstanding protection against the elements, which is crucial for our clients’ peace of mind.
Working with Permavent has been a seamless experience. Their team is always responsive, knowledgeable, and dedicated to supporting us throughout the installation process. They provide
comprehensive technical support and timely deliveries, which helps us maintain our project timelines without compromise.
We are proud to partner with Permavent and look forward to continuing our collaboration for future projects.”

Martin Mercer, Contracts Manager at B&D Roofing and Building

Products Used

Permavent APEX

Air open and vapour permeable underlay

Suitable for use with all types of solar panels
BBA certified 23/6867
Integrated double tape system

Permavent Tray

Underlay support tray

Drains water into the gutter, keeping it away from the underlay
Prevents ponding behind the fascia and the underlay sagging
Suitable for all roofs
Ideal for when fascia boards are being replaced

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